Results 71 to 80 of about 185,884 (298)

Economic sustainability of extending lay cycle in the supply-managed Canadian egg industry

Frontiers in Animal Science, 2023
The productivity levels of the Canadian egg industry have increased over the years, including hen productivity and feed conversion efficiency. Moreover, genetic improvements combined with improved feed and light management have recently resulted in hens ...
Ousmane Z. Traore, Maurice Doyon
doaj   +1 more source

Magnesium Requirement of the Laying Hen ,

Poultry Science, 1968
Abstract THE quantitative requirement for magnesium by laying hens has not been established. The National Research Council in 1966 listed the growing chicken's requirement as 500 mg. magnesium per kilogram of feed, but gave no estimate of the hen's requirement while Edwards et al. (1961) showed that the phosphorus level of the hen's diet had a marked
H M, Edwards, D, Nugara
openaire   +2 more sources

Potential of LCA for designing technological innovations – the case of organic eggs [PDF]

, 2009
Ecological sustainability in agriculture is a concept that contains various environmental problems, which are caused by emission of pollutants and unsustainable use of limited resources, during different processes along the food chain.
de Boer, I.J.M., Boer, I.J.M., de, Aarnink, A.J.A., Dekker, S.E.M., Groot Koerkamp, P.W.G.   +4 more
core  

Fasting and Refeeding Mediated Phospholipid Remodeling Plays an Important Role in Improving Meat Quality of Aged Laying Hens

Animal Research and One Health, EarlyView.
ABSTRACT This study explored fasting‐induced physiological remodeling effects on meat quality in aged laying hens. Fasting for 15 days (F15) significantly reduced abdominal fat, intermuscular fat width, subcutaneous fat thickness, and liver index versus pre‐fasting (F0) (p < 0.05), which recovered post‐refeeding.
Xiaoran Zhang, Jun Zhang, Yadong Tian, Donghua Li, Yanhua Zhang, Lujie Zhang, Yujie Gong, Xiangtao Kang, Ruirui Jiang   +8 more
wiley   +1 more source

Response of three laying hen genotypes to two feed calcium levels

Czech Journal of Animal Science, 2019
The present study aimed to evaluate the effect of two dietary Ca levels (3.00% vs 3.50%) in three hen genotypes (ISA Brown, Bovans Brown and Moravia BSL) on their laying performance and quality of their eggs.
Mohamed Ketta, Eva Tumova, Darina Chodova   +2 more
doaj   +1 more source

Heat Stress and Gut Microbiome Dynamics in Poultry: Interplay, Consequences, and Mitigation Strategies

Animal Research and One Health, EarlyView.
Heat stress disrupts gut microbial balance in poultry, impairing nutrient absorption and immunity. This review outlines the interplay between thermal stress and microbiome dynamics and discusses integrative mitigation strategies, probiotics, phytogenics, cooling systems, and genetic adaptation to enhance poultry resilience.
O. E. Oke, A. I. Oni, O. A. Akosile, K. M. Oliyide, C. A. Ishola, M. O. Logunleko, O. A. Jimoh, C. P. Njoku, L. O. Fasasi, V. A. Uyanga   +9 more
wiley   +1 more source

Drying, a practical technology for reduction of poultry litter (environmental) pollution: methods and their effects on important parameters

Poultry Science
: Poultry farming generates significant poultry litter (broiler litter and laying hen manure), posing environmental and human health risks. Heat treatment, particularly through drying, can mitigate these adverse effects.
Mehdi Khodadadi, Aminolah Masoumi, Morteza Sadeghi   +2 more
doaj   +1 more source

Characterization of miR-200 family members as blood biomarkers for human and laying hen ovarian cancer

, 2020
MicroRNA-200 (miR-200) family is highly expressed in ovarian cancer. We evaluated the levels of family members relative to the internal control miR-103a in ovarian cancer and control blood specimens collected from American and Hong Kong Chinese ...
Norwitz, Errol R, Ng, Shu-Wing, Wong, Kwong-Kwok, Hales, Dale B, Chow, Chun Kin, Bahrampour, Abbas, Xie, Fang, Ng, Shu-Kay, Hales, Karen H, Kuo, Winston Patrick, Kwong, Joseph, Liu, Sze Kei, Qiu, Wei, Choi, Pui-Wah, Berkowitz, Ross S   +14 more
core   +1 more source

Heat Stress in Quail: Impacts on Health and Productivity, and Mitigation Strategies

Animal Research and One Health, EarlyView.
Heat stress disrupts physiological homeostasis in quail, inducing oxidative stress, immune dysregulation, and metabolic imbalance, which impair growth, reproduction, product quality, and welfare. Integrating nutritional, environmental, and genetic–epigenetic strategies enhances thermotolerance, sustains productivity, and supports climate‐smart quail ...
T. A. Eletu, I. A. Anjola, L. O. Fasasi, D. P. Fadipe, A. T. Afuye, F. O. Fasanya, O. E. Oke   +6 more
wiley   +1 more source

Indoor Concentration Distributions of Ammonia and Sulfur-Based Odorous Substances According to Types of Laying Hen Houses in South Korea

Atmosphere
In South Korea, environmental complaints related to livestock odors continue to increase, and various efforts are underway to overcome them. An objective of this study is to monitor indoor concentrations of ammonia and sulfur-based odorous substances ...
Ki-Youn Kim, Jung-Kon Kim
doaj   +1 more source